How do I keep enemies from walking over each other? If I look at games like Torchlight, Diablo, etc. where there is clear view of the surrounding monsters, I notice that the enemies never walk over each other. I have just implemented the Simple Path scripts in my Unity3D game, but I want to make it so that my enemies do not ever occupy the same space. I cannot simply enable physics collisions; this would result in enemies potentially getting stuck. What is the most common way of achieving enemy/obstacle avoidance while correctly path finding?